Screen Test

Test your display for issues

How to use:

Click a color/gradient/pattern or the start button to enter fullscreen
Look for any dead pixels (dots that stay one color regardless of test)
Use arrow keys or click to cycle through options
Press ESC to exit fullscreen mode
For dead pixel detection, use solid colors and look closely at the entire screen

🔴

Stuck black or colored dots that don't change with the test color

⬜

Pixels stuck on one color (often white) regardless of display content

🌈

Use gradients to check for color banding or uneven display areas